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/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.plugins.apache;
import java.io.File;
import java.net.URI;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rhq.augeas.node.AugeasNode;
import org.rhq.core.domain.configuration.Configuration;
import org.rhq.core.domain.configuration.PropertySimple;
import org.rhq.core.domain.resource.ResourceType;
import org.rhq.core.pluginapi.inventory.DiscoveredResourceDetails;
import org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException;
import org.rhq.core.pluginapi.inventory.ResourceDiscoveryComponent;
import org.rhq.core.pluginapi.inventory.ResourceDiscoveryContext;
import org.rhq.plugins.apache.parser.ApacheDirective;
import org.rhq.plugins.apache.parser.ApacheDirectiveTree;
import org.rhq.plugins.apache.util.HttpdAddressUtility.Address;
import org.rhq.plugins.www.snmp.SNMPException;
import org.rhq.plugins.www.snmp.SNMPSession;
import org.rhq.plugins.www.snmp.SNMPValue;
/**
* Discovers VirtualHosts under the Apache server by reading them out from Augeas tree constructed
* in the parent component. If Augeas is not present, an attempt is made to discover the vhosts using
* SNMP module.
*
* @author Ian Springer
* @author Lukas Krejci
*/
public class ApacheVirtualHostServiceDiscoveryComponent implements ResourceDiscoveryComponent {
private static final String COULD_NOT_DETERMINE_THE_VIRTUAL_HOST_ADDRESS = "*** Could not determine the virtual host address ***";
public static final String LOGS_DIRECTORY_NAME = "logs";
private static final String RT_LOG_FILE_NAME_SUFFIX = "_rt.log";
private static final Log log = LogFactory.getLog(ApacheVirtualHostServiceDiscoveryComponent.class);
public Set discoverResources(ResourceDiscoveryContext context)
throws InvalidPluginConfigurationException, Exception {
Set discoveredResources = new LinkedHashSet();
//BZ 612189 - prepare for the legacy overrides. We need to revert to the old-style resource keys until
//resource upgrade functionality is ready.
SnmpWwwServiceIndexes snmpDiscoveries = getSnmpDiscoveries(context);
ApacheServerComponent serverComponent = context.getParentResourceComponent();
ApacheDirectiveTree tree = serverComponent.loadParser();
//first define the root server as one virtual host
discoverMainServer(context, discoveredResources, snmpDiscoveries);
ResourceType resourceType = context.getResourceType();
File configPath = serverComponent.getServerRoot();
File logsDir = new File(configPath, LOGS_DIRECTORY_NAME);
List virtualHosts = tree.search("/ hosts = node.getValues();
String firstAddress = hosts.get(0);
List serverNames = node.getChildByName("ServerName");
String serverName = null;
if (serverNames.size() > 0) {
serverName = serverNames.get(0).getValuesAsString();
}
StringBuilder keyBuilder = new StringBuilder();
if (serverName != null) {
keyBuilder.append(serverName).append("|");
}
keyBuilder.append(firstAddress);
for (int i=1;i context,
Set discoveredResources, SnmpWwwServiceIndexes snmpDiscoveries) throws Exception {
ResourceType resourceType = context.getResourceType();
Configuration mainServerPluginConfig = context.getDefaultPluginConfiguration();
File configPath = context.getParentResourceComponent().getServerRoot();
File logsDir = new File(configPath, LOGS_DIRECTORY_NAME);
String mainServerUrl = context.getParentResourceContext().getPluginConfiguration().getSimple(
ApacheServerComponent.PLUGIN_CONFIG_PROP_URL).getStringValue();
if (mainServerUrl != null && !"null".equals(mainServerUrl)) {
PropertySimple mainServerUrlProp = new PropertySimple(ApacheVirtualHostServiceComponent.URL_CONFIG_PROP,
mainServerUrl);
mainServerPluginConfig.put(mainServerUrlProp);
URI mainServerUri = new URI(mainServerUrl);
String host = mainServerUri.getHost();
int port = mainServerUri.getPort();
if (port == -1) {
port = 80;
}
File rtLogFile = new File(logsDir, host + port + RT_LOG_FILE_NAME_SUFFIX);
PropertySimple rtLogProp = new PropertySimple(
ApacheVirtualHostServiceComponent.RESPONSE_TIME_LOG_FILE_CONFIG_PROP, rtLogFile.toString());
mainServerPluginConfig.put(rtLogProp);
}
String key = ApacheVirtualHostServiceComponent.MAIN_SERVER_RESOURCE_KEY;
//BZ 612189 - remove this once we have resource upgrade
if (snmpDiscoveries != null) {
String legacyKey = getLegacyResourceKey(context, key, snmpDiscoveries);
key = legacyKey != null ? legacyKey : key;
}
DiscoveredResourceDetails mainServer = new DiscoveredResourceDetails(resourceType,
key, "Main", null, null,
mainServerPluginConfig, null);
discoveredResources.add(mainServer);
}
/**
* @deprecated remove this once we have resource upgrade
* @param discoveryContext
* @param newStyleResourceKey
* @param snmpDiscoveries
* @return
*/
@Deprecated
private String getLegacyResourceKey(ResourceDiscoveryContext discoveryContext, String newStyleResourceKey, SnmpWwwServiceIndexes snmpDiscoveries) {
int snmpWwwServiceIndex = ApacheVirtualHostServiceComponent.getMatchingWwwServiceIndex(discoveryContext.getParentResourceComponent(), newStyleResourceKey, snmpDiscoveries.names, snmpDiscoveries.ports);
if (snmpWwwServiceIndex < 1) {
return null;
} else {
String host = snmpDiscoveries.names.get(snmpWwwServiceIndex - 1).toString();
String fullPort = snmpDiscoveries.ports.get(snmpWwwServiceIndex - 1).toString();
// The port value will be in the form "1.3.6.1.2.1.6.XXXXX",
// where "1.3.6.1.2.1.6" represents the TCP protocol ID,
// and XXXXX is the actual port number
String port = fullPort.substring(fullPort.lastIndexOf(".") + 1);
return host + ":" + port;
}
}
/**
* @deprecated remove this once we have resource upgrade
* @param discoveryContext
* @return
*/
@Deprecated
private SnmpWwwServiceIndexes getSnmpDiscoveries(ResourceDiscoveryContext discoveryContext) {
try {
SNMPSession snmpSession = discoveryContext.getParentResourceComponent().getSNMPSession();
List nameValues;
List portValues;
SNMPValue descValue;
try {
nameValues = snmpSession.getColumn(SNMPConstants.COLUMN_VHOST_NAME);
} catch (SNMPException e) {
throw new Exception(
"Error getting SNMP column: " + SNMPConstants.COLUMN_VHOST_NAME + ": " + e.getMessage(), e);
}
try {
portValues = snmpSession.getColumn(SNMPConstants.COLUMN_VHOST_PORT);
} catch (SNMPException e) {
throw new Exception(
"Error getting SNMP column: " + SNMPConstants.COLUMN_VHOST_PORT + ": " + e.getMessage(), e);
}
try {
// Just get the first one - they are all the same.
descValue = snmpSession.getNextValue(SNMPConstants.COLUMN_VHOST_DESC);
} catch (SNMPException e) {
throw new Exception("Error getting SNMP value: " + SNMPConstants.COLUMN_VHOST_DESC + ": " + e.getMessage(),
e);
}
SnmpWwwServiceIndexes ret = new SnmpWwwServiceIndexes();
ret.names = nameValues;
ret.ports = portValues;
ret.desc = descValue;
return ret;
} catch (Exception e) {
log.warn("Error while trying to contact SNMP of the apache server " + discoveryContext.getParentResourceContext().getResourceKey());
return null;
}
}
/**
* @deprecated remove this once we have resource upgrade
*
* @author Lukas Krejci
*/
@Deprecated
private static class SnmpWwwServiceIndexes {
public List names;
public List ports;
public SNMPValue desc;
}
}
